Button-holding chuck



P. F. DUSHA AND A. FEYK.

BUTTON HOLDING CHUCK APPLlCATlON FILED on. 11. 1919.

1,332,817. Patented Mar. 2,1920.

M I Q M ATTORNEYS WITNESSES INVENTOHS UNITED STATES. PATENT OFFICE.

PAUL F. DUSHA, OF NEW YORK, AND ANTON FEYK, OF BOI-IEMIA, NEW YORK,

ASSIGNORS TO HOLUB DUST-IA COMPANY, OF NEW YORK, N. Y., A CORPORA- TION OF NEW YORK.

BUTTON-HOLDING CHUCK.

Specification of Letters Patent.

Patented Mar. 2, 1920.

To all whom it may concern Be it known that we, PAUL F. DUSHA and ANTON FEYK, citizens of the United States, and residents, respectively, of the city of New York, borough of Manhattan, in the county and State of New York, and Bohemia, in the county of Sufiolk and State of New York, have invented a new and Improved Button-Holding Chuck, of which the following is a full, clear, and exact description.

This invention relates to chucks such as are employed for holding buttons in the manufacture of pearl buttons and has general reference to that type of devices shown and claimed in Patent No. 943,616, issued to Holub-Dusha Co., on the 14th day of December, 1909, on application of Louis W. Holub.

Among the objects of this improvement is to simplify the means for adjusting and locking of the button supporting abutment member so as to render it unnecessary for the application of a tool into or through the lower end of the spindle, the spindle being normally locked inplace in the main portion of the machine in such a position as to render access thereto relatively diflicult.

With the foregoing and other objects in view the invention consists in the arrangement and combination of parts hereinafter described and claimed, and while the invention is not restricted to the exact details of construction disclosed or suggested herein, still for the purpose of illustrating a practical embodiment thereof reference is had to the accompanying drawings, in which like reference characters designate the same parts in the several views, and in which Figure 1 is a vertical sectional view of our improved chuck in one operative position.

Fig. 2 is a side elevation of the abutment member and supporting quill.

Fig. 3 is a side elevation of the locking plug and its extended stem; and

Fig. 4 is a plan view of the chuck as shown in Fig. 1.

Referring now more specifically to the drawings we show at 10 a tubular spindle having at its upper end a chuck socket 11, the walls of the socket being split vertically or longitudinally'at 12 to provide ample flexibility therefor as is well known in this type of devices. The spindle is provided with a central bore 13 having a threaded portion 13 toward the lower end of the spindle and having an internally threaded counterbore 13 reaching approximately to the lower end of the spindle.

The abutment member comprises a head 14 and a quill 15 constituting a stem for supporting the head. The head is provided with a transverse groove 16 and the lower end of the quill is externally threaded at 17 for coiiperation with the threaded bore 13 whereby the position of the head may be suitably determined by the application of a screw driver or the like in the groove 16 through the open upper end of the chuck. The lower threaded end 17 of the quill is preferably split longitudinally at 17 and the extreme lower end thereof is beveled or reamed out at 18.

After the abutment is adjusted at the proper elevation in the manner above described it is locked firmly in such position by means of a plug 19 having a frusto conical or tapered shoulder 20 and a stem 21. The plug 19 has threaded engagement in the counterbore 13 of the spindle and the tapered shoulder 20 projects into the reamed end 18 of the quill whereby the split end portion of the quill is spread apart causing the wedging or binding of the threaded portion 17 thereof in the bore 13 By reason, however, of the threaded engagement of the plug in the counter-bore 13 the locking of the quill-might be made complete even without the split 17 and the reamed end 18. We prefer, however, that the parts be made as indicated for the most satisfactory operation. The stem 21 extending upward through or practically through the bore of the quill and being provided at its upper end with a groove 22 may easily be reached with a screw driver projected downward through the abutment head. It is, therefore, unnecessary to reach through the lower end of the spindle for any purpose, although for convenience of assembling of the parts we provide a groove 23 in the plug 19 for the application of a screw driver. After the parts, however, are assembled and are to be adjusted delicately at any time, such adjustment'may readily be effected through the open upper end of the chuck socket only.

We claim:

1. In a button holding chuck, the com bination with a spindle havinga threaded bore and an opentopped chuck socket, of an abutment havinga head located in said socket and a stem having threaded engagement in said bore, and means accessible through the open topped chuck socket to ad? just the abutment and lock the same in adj 'usted position.

a 2. The hereiir described button holding 3,111 a button holding chuck, the com bination witha hollow spindle, .an abutment member'within the spindle and adjustable longitudinally thereof, and a locking device cooperating with the abutment member and spindle and accessible through the top of the spindle for locking the abutment member from-endwise movementwith respect to the spindle 1 4 A; button holding chuck, the combination with a spindle having a, threaded bore and a threaded counterbore at its lower end, of an abutment member having a head and a quill integral.- therewith, said quill having an external screw thread cooperating with the threaded bore of the spindle, and a looking member comprising a plug cooperating with the threaded. counterbore aforesaid and adapted toabut' against the end of the abutment "member quill, said locking member also including a stem extending upward through the quill; and accessible for manipulation through the abutment head.

5; Inqa button. holding chuck, the combination of a spindle having an open topped socket at one end and an internal screw thread at its opposite end, an abutment member comprising a head within said socket and a quill projecting downward'toward said threaded endof'thespindle, and a locking member for theabutmentmember comprising a threaded plug cooperating with the spindle thread aforesaid and adapted to abut against the adjacent end of the quill, said locking member including also a stem extending along the quill and accessible through the open top socket for manipula tion.

6. In a button holding chuck, the combination of a spindle, an abutment member therein having a head at one end and a quill, the end of the quill opposite the head being longitudinally split, and a locking wedge member comprising a plug and an,

integral stem, the plug being tapered and cooperating withthe split end of the quill to spread the parts thereof apart and the-ste n projecting upward through the quill for manipulation thereof through the socket and abutment head, substantially as set forth.

7. The herein described button, holding chuck comprising a spindle havingan internal thread and threaded counterbore, an abutment member including a head atone end and a quill projecting therefrom and having the opposite end of the quill externally-threaded and longitudinally'split, said; threaded split end cooperating withv thethreaded bore of the spindle, and a lockingmember for the abutment member comprising an externally threaded plug cooperating with the counterbore thread aforesaid and, an integral stem projecting through the quill and accessible for rotation through the,

abutment member at the end remote from the plug.

PAUL F. DUSHA. ANTON FEYK. 

